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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Browse Source 
Block layer patches:

- block: Fix crash with qcow2 partial cluster COW with small cluster
  sizes (misaligned write requests with BDRV_REQ_NO_FALLBACK)
- qcow2: Fix integer overflow potentially causing corruption with huge
  requests
- vhdx: Detect truncated image files
- tools: Support help options for --object
- Various block-related replay improvements
- iotests/028: Fix for long $TEST_DIRs

# gpg: Signature made Mon 14 Oct 2019 17:02:54 BST
# gpg:                using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
  iotests: Test large write request to qcow2 file
  qcow2: Limit total allocation range to INT_MAX
  qemu-nbd: Support help options for --object
  qemu-img: Support help options for --object
  qemu-io: Support help options for --object
  vl: Split off user_creatable_print_help()
  iotests/028: Fix for long $TEST_DIRs
  block: Reject misaligned write requests with BDRV_REQ_NO_FALLBACK
  replay: add BH oneshot event for block layer
  replay: finish record/replay before closing the disks
  replay: don't drain/flush bdrv queue while RR is working
  replay: update docs for record/replay with block devices
  replay: disable default snapshot for record/replay
  block: implement bdrv_snapshot_goto for blkreplay
  block/vhdx: add check for truncated image files

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell
2019-10-15 13:25:05 +01:00
parent 9020e9526c a1406a9262
commit 3af78db681
32 changed files with 504 additions and 111 deletions
Download Patch File Download Diff File Expand all files Collapse all files
block/blkreplay.c
+8
View File
@@ -126,6 +126,12 @@ static int coroutine_fn blkreplay_co_flush(BlockDriverState *bs)
return ret;
}
static int blkreplay_snapshot_goto(BlockDriverState *bs,
const char *snapshot_id)
{
return bdrv_snapshot_goto(bs->file->bs, snapshot_id, NULL);
}
static BlockDriver bdrv_blkreplay = {
.format_name = "blkreplay",
.instance_size = 0,
@@ -140,6 +146,8 @@ static BlockDriver bdrv_blkreplay = {
.bdrv_co_pwrite_zeroes = blkreplay_co_pwrite_zeroes,
.bdrv_co_pdiscard = blkreplay_co_pdiscard,
.bdrv_co_flush = blkreplay_co_flush,
.bdrv_snapshot_goto = blkreplay_snapshot_goto,
};
static void bdrv_blkreplay_init(void)
block/block-backend.c
+6 -3
View File
@@ -18,6 +18,8 @@
#include "hw/qdev-core.h"
#include "sysemu/blockdev.h"
#include "sysemu/runstate.h"
#include "sysemu/sysemu.h"
#include "sysemu/replay.h"
#include "qapi/error.h"
#include "qapi/qapi-events-block.h"
#include "qemu/id.h"
@@ -1306,7 +1308,8 @@ BlockAIOCB *blk_abort_aio_request(BlockBackend *blk,
acb->blk = blk;
acb->ret = ret;
aio_bh_schedule_oneshot(blk_get_aio_context(blk), error_callback_bh, acb);
replay_bh_schedule_oneshot_event(blk_get_aio_context(blk),
error_callback_bh, acb);
return &acb->common;
}
@@ -1362,8 +1365,8 @@ static BlockAIOCB *blk_aio_prwv(BlockBackend *blk, int64_t offset, int bytes,
acb->has_returned = true;
if (acb->rwco.ret != NOT_DONE) {
aio_bh_schedule_oneshot(blk_get_aio_context(blk),
blk_aio_complete_bh, acb);
replay_bh_schedule_oneshot_event(blk_get_aio_context(blk),
blk_aio_complete_bh, acb);
}
return &acb->common;
block/io.c
+37 -2
View File
@@ -33,6 +33,7 @@
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
#include "sysemu/replay.h"
#define NOT_DONE 0x7fffffff /* used while emulated sync operation in progress */
@@ -368,8 +369,8 @@ static void coroutine_fn bdrv_co_yield_to_drain(BlockDriverState *bs,
if (bs) {
bdrv_inc_in_flight(bs);
}
aio_bh_schedule_oneshot(bdrv_get_aio_context(bs),
bdrv_co_drain_bh_cb, &data);
replay_bh_schedule_oneshot_event(bdrv_get_aio_context(bs),
bdrv_co_drain_bh_cb, &data);
qemu_coroutine_yield();
/* If we are resumed from some other event (such as an aio completion or a
@@ -600,6 +601,15 @@ void bdrv_drain_all_begin(void)
return;
}
/*
* bdrv queue is managed by record/replay,
* waiting for finishing the I/O requests may
* be infinite
*/
if (replay_events_enabled()) {
return;
}
/* AIO_WAIT_WHILE() with a NULL context can only be called from the main
* loop AioContext, so make sure we're in the main context. */
assert(qemu_get_current_aio_context() == qemu_get_aio_context());
@@ -629,6 +639,15 @@ void bdrv_drain_all_end(void)
BlockDriverState *bs = NULL;
int drained_end_counter = 0;
/*
* bdrv queue is managed by record/replay,
* waiting for finishing the I/O requests may
* be endless
*/
if (replay_events_enabled()) {
return;
}
while ((bs = bdrv_next_all_states(bs))) {
AioContext *aio_context = bdrv_get_aio_context(bs);
@@ -2071,6 +2090,13 @@ int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child,
return ret;
}
/* If the request is misaligned then we can't make it efficient */
if ((flags & BDRV_REQ_NO_FALLBACK) &&
!QEMU_IS_ALIGNED(offset | bytes, align))
{
return -ENOTSUP;
}
bdrv_inc_in_flight(bs);
/*
* Align write if necessary by performing a read-modify-write cycle.
@@ -2124,6 +2150,15 @@ int bdrv_flush_all(void)
BlockDriverState *bs = NULL;
int result = 0;
/*
* bdrv queue is managed by record/replay,
* creating new flush request for stopping
* the VM may break the determinism
*/
if (replay_events_enabled()) {
return result;
}
for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
AioContext *aio_context = bdrv_get_aio_context(bs);
int ret;
block/iscsi.c
+3 -2
View File
@@ -40,6 +40,7 @@
#include "qemu/module.h"
#include "qemu/option.h"
#include "qemu/uuid.h"
#include "sysemu/replay.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-misc.h"
#include "qapi/qmp/qdict.h"
@@ -280,8 +281,8 @@ iscsi_co_generic_cb(struct iscsi_context *iscsi, int status,
}
if (iTask->co) {
aio_bh_schedule_oneshot(iTask->iscsilun->aio_context,
iscsi_co_generic_bh_cb, iTask);
replay_bh_schedule_oneshot_event(iTask->iscsilun->aio_context,
iscsi_co_generic_bh_cb, iTask);
} else {
iTask->complete = 1;
}
block/nfs.c
+4 -2
View File
@@ -37,6 +37,8 @@
#include "qemu/option.h"
#include "qemu/uri.h"
#include "qemu/cutils.h"
#include "sysemu/sysemu.h"
#include "sysemu/replay.h"
#include "qapi/qapi-visit-block-core.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qstring.h"
@@ -257,8 +259,8 @@ nfs_co_generic_cb(int ret, struct nfs_context *nfs, void *data,
if (task->ret < 0) {
error_report("NFS Error: %s", nfs_get_error(nfs));
}
aio_bh_schedule_oneshot(task->client->aio_context,
nfs_co_generic_bh_cb, task);
replay_bh_schedule_oneshot_event(task->client->aio_context,
nfs_co_generic_bh_cb, task);
}
static int coroutine_fn nfs_co_preadv(BlockDriverState *bs, uint64_t offset,
block/null.c
+3 -1
View File
@@ -17,6 +17,7 @@
#include "qemu/module.h"
#include "qemu/option.h"
#include "block/block_int.h"
#include "sysemu/replay.h"
#define NULL_OPT_LATENCY "latency-ns"
#define NULL_OPT_ZEROES "read-zeroes"
@@ -179,7 +180,8 @@ static inline BlockAIOCB *null_aio_common(BlockDriverState *bs,
timer_mod_ns(&acb->timer,
qemu_clock_get_ns(QEMU_CLOCK_REALTIME) + s->latency_ns);
} else {
aio_bh_schedule_oneshot(bdrv_get_aio_context(bs), null_bh_cb, acb);
replay_bh_schedule_oneshot_event(bdrv_get_aio_context(bs),
null_bh_cb, acb);
}
return &acb->common;
}
block/nvme.c
+4 -2
View File
@@ -23,6 +23,7 @@
#include "qemu/option.h"
#include "qemu/vfio-helpers.h"
#include "block/block_int.h"
#include "sysemu/replay.h"
#include "trace.h"
#include "block/nvme.h"
@@ -351,7 +352,8 @@ static bool nvme_process_completion(BDRVNVMeState *s, NVMeQueuePair *q)
smp_mb_release();
*q->cq.doorbell = cpu_to_le32(q->cq.head);
if (!qemu_co_queue_empty(&q->free_req_queue)) {
aio_bh_schedule_oneshot(s->aio_context, nvme_free_req_queue_cb, q);
replay_bh_schedule_oneshot_event(s->aio_context,
nvme_free_req_queue_cb, q);
}
}
q->busy = false;
@@ -935,7 +937,7 @@ static void nvme_rw_cb(void *opaque, int ret)
/* The rw coroutine hasn't yielded, don't try to enter. */
return;
}
aio_bh_schedule_oneshot(data->ctx, nvme_rw_cb_bh, data);
replay_bh_schedule_oneshot_event(data->ctx, nvme_rw_cb_bh, data);
}
static coroutine_fn int nvme_co_prw_aligned(BlockDriverState *bs,
block/qcow2-cluster.c
+4 -1
View File
@@ -1330,6 +1330,9 @@ static int handle_alloc(BlockDriverState *bs, uint64_t guest_offset,
nb_clusters = MIN(nb_clusters, s->l2_slice_size - l2_index);
assert(nb_clusters <= INT_MAX);
/* Limit total allocation byte count to INT_MAX */
nb_clusters = MIN(nb_clusters, INT_MAX >> s->cluster_bits);
/* Find L2 entry for the first involved cluster */
ret = get_cluster_table(bs, guest_offset, &l2_slice, &l2_index);
if (ret < 0) {
@@ -1412,7 +1415,7 @@ static int handle_alloc(BlockDriverState *bs, uint64_t guest_offset,
* request actually writes to (excluding COW at the end)
*/
uint64_t requested_bytes = *bytes + offset_into_cluster(s, guest_offset);
int avail_bytes = MIN(INT_MAX, nb_clusters << s->cluster_bits);
int avail_bytes = nb_clusters << s->cluster_bits;
int nb_bytes = MIN(requested_bytes, avail_bytes);
QCowL2Meta *old_m = *m;
block/rbd.c
+3 -2
View File
@@ -22,6 +22,7 @@
#include "block/qdict.h"
#include "crypto/secret.h"
#include "qemu/cutils.h"
#include "sysemu/replay.h"
#include "qapi/qmp/qstring.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qjson.h"
@@ -884,8 +885,8 @@ static void rbd_finish_aiocb(rbd_completion_t c, RADOSCB *rcb)
rcb->ret = rbd_aio_get_return_value(c);
rbd_aio_release(c);
aio_bh_schedule_oneshot(bdrv_get_aio_context(acb->common.bs),
rbd_finish_bh, rcb);
replay_bh_schedule_oneshot_event(bdrv_get_aio_context(acb->common.bs),
rbd_finish_bh, rcb);
}
static int rbd_aio_discard_wrapper(rbd_image_t image,
block/vhdx.c
+103 -17
View File
@@ -24,6 +24,7 @@
#include "qemu/option.h"
#include "qemu/crc32c.h"
#include "qemu/bswap.h"
#include "qemu/error-report.h"
#include "vhdx.h"
#include "migration/blocker.h"
#include "qemu/uuid.h"
@@ -235,6 +236,9 @@ static int vhdx_region_check(BDRVVHDXState *s, uint64_t start, uint64_t length)
end = start + length;
QLIST_FOREACH(r, &s->regions, entries) {
if (!((start >= r->end) || (end <= r->start))) {
error_report("VHDX region %" PRIu64 "-%" PRIu64 " overlaps with "
"region %" PRIu64 "-%." PRIu64, start, end, r->start,
r->end);
ret = -EINVAL;
goto exit;
}
@@ -877,6 +881,95 @@ static void vhdx_calc_bat_entries(BDRVVHDXState *s)
}
static int vhdx_check_bat_entries(BlockDriverState *bs, int *errcnt)
{
BDRVVHDXState *s = bs->opaque;
int64_t image_file_size = bdrv_getlength(bs->file->bs);
uint64_t payblocks = s->chunk_ratio;
uint64_t i;
int ret = 0;
if (image_file_size < 0) {
error_report("Could not determinate VHDX image file size.");
return image_file_size;
}
for (i = 0; i < s->bat_entries; i++) {
if ((s->bat[i] & VHDX_BAT_STATE_BIT_MASK) ==
PAYLOAD_BLOCK_FULLY_PRESENT) {
uint64_t offset = s->bat[i] & VHDX_BAT_FILE_OFF_MASK;
/*
* Allow that the last block exists only partially. The VHDX spec
* states that the image file can only grow in blocksize increments,
* but QEMU created images with partial last blocks in the past.
*/
uint32_t block_length = MIN(s->block_size,
bs->total_sectors * BDRV_SECTOR_SIZE - i * s->block_size);
/*
* Check for BAT entry overflow.
*/
if (offset > INT64_MAX - s->block_size) {
error_report("VHDX BAT entry %" PRIu64 " offset overflow.", i);
ret = -EINVAL;
if (!errcnt) {
break;
}
(*errcnt)++;
}
/*
* Check if fully allocated BAT entries do not reside after
* end of the image file.
*/
if (offset >= image_file_size) {
error_report("VHDX BAT entry %" PRIu64 " start offset %" PRIu64
" points after end of file (%" PRIi64 "). Image"
" has probably been truncated.",
i, offset, image_file_size);
ret = -EINVAL;
if (!errcnt) {
break;
}
(*errcnt)++;
} else if (offset + block_length > image_file_size) {
error_report("VHDX BAT entry %" PRIu64 " end offset %" PRIu64
" points after end of file (%" PRIi64 "). Image"
" has probably been truncated.",
i, offset + block_length - 1, image_file_size);
ret = -EINVAL;
if (!errcnt) {
break;
}
(*errcnt)++;
}
/*
* verify populated BAT field file offsets against
* region table and log entries
*/
if (payblocks--) {
/* payload bat entries */
int ret2;
ret2 = vhdx_region_check(s, offset, s->block_size);
if (ret2 < 0) {
ret = -EINVAL;
if (!errcnt) {
break;
}
(*errcnt)++;
}
} else {
payblocks = s->chunk_ratio;
/*
* Once differencing files are supported, verify sector bitmap
* blocks here
*/
}
}
}
return ret;
}
static void vhdx_close(BlockDriverState *bs)
{
BDRVVHDXState *s = bs->opaque;
@@ -981,25 +1074,15 @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
uint64_t payblocks = s->chunk_ratio;
/* endian convert, and verify populated BAT field file offsets against
* region table and log entries */
/* endian convert populated BAT field entires */
for (i = 0; i < s->bat_entries; i++) {
s->bat[i] = le64_to_cpu(s->bat[i]);
if (payblocks--) {
/* payload bat entries */
if ((s->bat[i] & VHDX_BAT_STATE_BIT_MASK) ==
PAYLOAD_BLOCK_FULLY_PRESENT) {
ret = vhdx_region_check(s, s->bat[i] & VHDX_BAT_FILE_OFF_MASK,
s->block_size);
if (ret < 0) {
goto fail;
}
}
} else {
payblocks = s->chunk_ratio;
/* Once differencing files are supported, verify sector bitmap
* blocks here */
}
if (!(flags & BDRV_O_CHECK)) {
ret = vhdx_check_bat_entries(bs, NULL);
if (ret < 0) {
goto fail;
}
}
@@ -2072,6 +2155,9 @@ static int coroutine_fn vhdx_co_check(BlockDriverState *bs,
if (s->log_replayed_on_open) {
result->corruptions_fixed++;
}
vhdx_check_bat_entries(bs, &result->corruptions);
return 0;
}
block/vxhs.c
+3 -2
View File
@@ -22,6 +22,7 @@
#include "qapi/error.h"
#include "qemu/uuid.h"
#include "crypto/tlscredsx509.h"
#include "sysemu/replay.h"
#define VXHS_OPT_FILENAME "filename"
#define VXHS_OPT_VDISK_ID "vdisk-id"
@@ -105,8 +106,8 @@ static void vxhs_iio_callback(void *ctx, uint32_t opcode, uint32_t error)
trace_vxhs_iio_callback(error);
}
aio_bh_schedule_oneshot(bdrv_get_aio_context(acb->common.bs),
vxhs_complete_aio_bh, acb);
replay_bh_schedule_oneshot_event(bdrv_get_aio_context(acb->common.bs),
vxhs_complete_aio_bh, acb);
break;
default:
cpus.c
-2
View File
@@ -1097,7 +1097,6 @@ static int do_vm_stop(RunState state, bool send_stop)
}
bdrv_drain_all();
replay_disable_events();
ret = bdrv_flush_all();
return ret;
@@ -2181,7 +2180,6 @@ int vm_prepare_start(void)
/* We are sending this now, but the CPUs will be resumed shortly later */
qapi_event_send_resume();
replay_enable_events();
cpu_enable_ticks();
runstate_set(RUN_STATE_RUNNING);
vm_state_notify(1, RUN_STATE_RUNNING);
docs/replay.txt
+9 -3
View File
@@ -27,7 +27,7 @@ Usage of the record/replay:
* First, record the execution with the following command line:
qemu-system-i386 \
-icount shift=7,rr=record,rrfile=replay.bin \
-drive file=disk.qcow2,if=none,id=img-direct \
-drive file=disk.qcow2,if=none,snapshot,id=img-direct \
-drive driver=blkreplay,if=none,image=img-direct,id=img-blkreplay \
-device ide-hd,drive=img-blkreplay \
-netdev user,id=net1 -device rtl8139,netdev=net1 \
@@ -35,7 +35,7 @@ Usage of the record/replay:
* After recording, you can replay it by using another command line:
qemu-system-i386 \
-icount shift=7,rr=replay,rrfile=replay.bin \
-drive file=disk.qcow2,if=none,id=img-direct \
-drive file=disk.qcow2,if=none,snapshot,id=img-direct \
-drive driver=blkreplay,if=none,image=img-direct,id=img-blkreplay \
-device ide-hd,drive=img-blkreplay \
-netdev user,id=net1 -device rtl8139,netdev=net1 \
@@ -223,7 +223,7 @@ Block devices record/replay module intercepts calls of
bdrv coroutine functions at the top of block drivers stack.
To record and replay block operations the drive must be configured
as following:
-drive file=disk.qcow2,if=none,id=img-direct
-drive file=disk.qcow2,if=none,snapshot,id=img-direct
-drive driver=blkreplay,if=none,image=img-direct,id=img-blkreplay
-device ide-hd,drive=img-blkreplay
@@ -252,6 +252,12 @@ This snapshot is created at start of recording and restored at start
of replaying. It also can be loaded while replaying to roll back
the execution.
'snapshot' flag of the disk image must be removed to save the snapshots
in the overlay (or original image) instead of using the temporary overlay.
-drive file=disk.ovl,if=none,id=img-direct
-drive driver=blkreplay,if=none,image=img-direct,id=img-blkreplay
-device ide-hd,drive=img-blkreplay
Use QEMU monitor to create additional snapshots. 'savevm <name>' command
created the snapshot and 'loadvm <name>' restores it. To prevent corruption
of the original disk image, use overlay files linked to the original images.
include/qom/object_interfaces.h
+12
View File
@@ -132,6 +132,18 @@ typedef bool (*user_creatable_add_opts_predicate)(const char *type);
int user_creatable_add_opts_foreach(void *opaque,
QemuOpts *opts, Error **errp);
/**
* user_creatable_print_help:
* @type: the QOM type to be added
* @opts: options to create
*
* Prints help if requested in @opts.
*
* Returns: true if @opts contained a help option and help was printed, false
* if no help option was found.
*/
bool user_creatable_print_help(const char *type, QemuOpts *opts);
/**
* user_creatable_del:
* @id: the unique ID for the object
include/sysemu/replay.h
+4
View File
@@ -15,6 +15,7 @@
#include "qapi/qapi-types-misc.h"
#include "qapi/qapi-types-run-state.h"
#include "qapi/qapi-types-ui.h"
#include "block/aio.h"
/* replay clock kinds */
enum ReplayClockKind {
@@ -140,6 +141,9 @@ void replay_enable_events(void);
bool replay_events_enabled(void);
/*! Adds bottom half event to the queue */
void replay_bh_schedule_event(QEMUBH *bh);
/* Adds oneshot bottom half event to the queue */
void replay_bh_schedule_oneshot_event(AioContext *ctx,
QEMUBHFunc *cb, void *opaque);
/*! Adds input event to the queue */
void replay_input_event(QemuConsole *src, InputEvent *evt);
/*! Adds input sync event to the queue */
qemu-img.c
+21 -13
View File
@@ -214,6 +214,14 @@ static QemuOptsList qemu_object_opts = {
},
};
static bool qemu_img_object_print_help(const char *type, QemuOpts *opts)
{
if (user_creatable_print_help(type, opts)) {
exit(0);
}
return true;
}
static QemuOptsList qemu_source_opts = {
.name = "source",
.implied_opt_name = "file",
@@ -516,7 +524,7 @@ static int img_create(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
goto fail;
}
@@ -766,7 +774,7 @@ static int img_check(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
return 1;
}
@@ -979,7 +987,7 @@ static int img_commit(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
return 1;
}
@@ -1362,7 +1370,7 @@ static int img_compare(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
ret = 2;
goto out4;
}
@@ -2210,7 +2218,7 @@ static int img_convert(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
goto fail_getopt;
}
@@ -2776,7 +2784,7 @@ static int img_info(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
return 1;
}
@@ -3002,7 +3010,7 @@ static int img_map(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
return 1;
}
@@ -3154,7 +3162,7 @@ static int img_snapshot(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
return 1;
}
@@ -3321,7 +3329,7 @@ static int img_rebase(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
return 1;
}
@@ -3742,7 +3750,7 @@ static int img_resize(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
return 1;
}
@@ -3986,7 +3994,7 @@ static int img_amend(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
ret = -1;
goto out_no_progress;
}
@@ -4630,7 +4638,7 @@ static int img_dd(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
ret = -1;
goto out;
}
@@ -4907,7 +4915,7 @@ static int img_measure(int argc, char **argv)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal)) {
qemu_img_object_print_help, &error_fatal)) {
goto out;
}
qemu-io.c
+8 -1
View File
@@ -475,6 +475,13 @@ static QemuOptsList qemu_object_opts = {
},
};
static bool qemu_io_object_print_help(const char *type, QemuOpts *opts)
{
if (user_creatable_print_help(type, opts)) {
exit(0);
}
return true;
}
static QemuOptsList file_opts = {
.name = "file",
@@ -622,7 +629,7 @@ int main(int argc, char **argv)
qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal);
qemu_io_object_print_help, &error_fatal);
if (!trace_init_backends()) {
exit(1);
qemu-nbd.c
+8 -1
View File
@@ -507,6 +507,13 @@ static QemuOptsList qemu_object_opts = {
},
};
static bool qemu_nbd_object_print_help(const char *type, QemuOpts *opts)
{
if (user_creatable_print_help(type, opts)) {
exit(0);
}
return true;
}
static QCryptoTLSCreds *nbd_get_tls_creds(const char *id, bool list,
@@ -902,7 +909,7 @@ int main(int argc, char **argv)
qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &error_fatal);
qemu_nbd_object_print_help, &error_fatal);
if (!trace_init_backends()) {
exit(1);
qom/object_interfaces.c
+61
View File
@@ -1,8 +1,11 @@
#include "qemu/osdep.h"
#include "qemu/cutils.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qerror.h"
#include "qom/object_interfaces.h"
#include "qemu/help_option.h"
#include "qemu/module.h"
#include "qemu/option.h"
#include "qapi/opts-visitor.h"
@@ -155,6 +158,64 @@ int user_creatable_add_opts_foreach(void *opaque, QemuOpts *opts, Error **errp)
return 0;
}
bool user_creatable_print_help(const char *type, QemuOpts *opts)
{
ObjectClass *klass;
if (is_help_option(type)) {
GSList *l, *list;
printf("List of user creatable objects:\n");
list = object_class_get_list_sorted(TYPE_USER_CREATABLE, false);
for (l = list; l != NULL; l = l->next) {
ObjectClass *oc = OBJECT_CLASS(l->data);
printf(" %s\n", object_class_get_name(oc));
}
g_slist_free(list);
return true;
}
klass = object_class_by_name(type);
if (klass && qemu_opt_has_help_opt(opts)) {
ObjectPropertyIterator iter;
ObjectProperty *prop;
GPtrArray *array = g_ptr_array_new();
int i;
object_class_property_iter_init(&iter, klass);
while ((prop = object_property_iter_next(&iter))) {
GString *str;
if (!prop->set) {
continue;
}
str = g_string_new(NULL);
g_string_append_printf(str, " %s=<%s>", prop->name, prop->type);
if (prop->description) {
if (str->len < 24) {
g_string_append_printf(str, "%*s", 24 - (int)str->len, "");
}
g_string_append_printf(str, " - %s", prop->description);
}
g_ptr_array_add(array, g_string_free(str, false));
}
g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0);
if (array->len > 0) {
printf("%s options:\n", type);
} else {
printf("There are no options for %s.\n", type);
}
for (i = 0; i < array->len; i++) {
printf("%s\n", (char *)array->pdata[i]);
}
g_ptr_array_set_free_func(array, g_free);
g_ptr_array_free(array, true);
return true;
}
return false;
}
void user_creatable_del(const char *id, Error **errp)
{
replay/replay-events.c
+16
View File
@@ -36,6 +36,9 @@ static void replay_run_event(Event *event)
case REPLAY_ASYNC_EVENT_BH:
aio_bh_call(event->opaque);
break;
case REPLAY_ASYNC_EVENT_BH_ONESHOT:
((QEMUBHFunc *)event->opaque)(event->opaque2);
break;
case REPLAY_ASYNC_EVENT_INPUT:
qemu_input_event_send_impl(NULL, (InputEvent *)event->opaque);
qapi_free_InputEvent((InputEvent *)event->opaque);
@@ -131,6 +134,17 @@ void replay_bh_schedule_event(QEMUBH *bh)
}
}
void replay_bh_schedule_oneshot_event(AioContext *ctx,
QEMUBHFunc *cb, void *opaque)
{
if (events_enabled) {
uint64_t id = replay_get_current_icount();
replay_add_event(REPLAY_ASYNC_EVENT_BH_ONESHOT, cb, opaque, id);
} else {
aio_bh_schedule_oneshot(ctx, cb, opaque);
}
}
void replay_add_input_event(struct InputEvent *event)
{
replay_add_event(REPLAY_ASYNC_EVENT_INPUT, event, NULL, 0);
@@ -161,6 +175,7 @@ static void replay_save_event(Event *event, int checkpoint)
/* save event-specific data */
switch (event->event_kind) {
case REPLAY_ASYNC_EVENT_BH:
case REPLAY_ASYNC_EVENT_BH_ONESHOT:
replay_put_qword(event->id);
break;
case REPLAY_ASYNC_EVENT_INPUT:
@@ -216,6 +231,7 @@ static Event *replay_read_event(int checkpoint)
/* Events that has not to be in the queue */
switch (replay_state.read_event_kind) {
case REPLAY_ASYNC_EVENT_BH:
case REPLAY_ASYNC_EVENT_BH_ONESHOT:
if (replay_state.read_event_id == -1) {
replay_state.read_event_id = replay_get_qword();
}

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